Portable mounting for electric drills



May 2 c.-A. MOWLES PORTABLE MOUNTING FOR ELECTRIC DRILLS Flecl Jul 8, 1925 1 3% m 2 Sheets-Sheet 1 M gwuwntoz 0, ZMW/ea 1,630,205 C. A. MOWLES PORTABLE MOUNTING FOR ELECTRIC DRILLS 2 Sheets-Sheet 2 Filed July 18. 1925 gmntot 6? ZMW/es May 241927.

Patented May 24; 1927.

UNITED s E s "PATE T OF 1,630,205 FICE.

cEcIL A, iviowmis, or DRILL; VIRGINIA, AssIeNo OF ONE-HALF T0 WILLIAM ii.

' McILI-IANY, or BLUEFIELD, wns'r VIRGINIA. I

j P RTA LR MOUNTING roR ELRo'rRIc DRILLS.

- 'A pplication med Ja is, 1925. Serial No. 44,607.

and more particularly to portablemountings or supports therefor; v j a i The invention has for one of its objects the provision of a mounting or support oi the. character stated which shall be adapted to be readily secured'to a mine locomotive, mine car L or work car and which shallsbe readily adjustable to permit the fdrillito be used for boring mine trolley hanger holes at any vertical distance from the vehicle to which it is secured. j 1 a A further object of the invention is the provision of a mounting or support of the character stated which shall be adjustable to permit the boring of mine trolley hanger holes at any horizontal or'verticaldistance fromthe'vehicle. a V

=A further object of the invention is the provision of a mounting or support (of/the character stated which shall be adjustable to permit the mine trolley hanger holes to be bored at ;any desired or required angle;

A further object of the invention is the provision oi'a mounting or support of the character statedthat can be readily fixed in the trolley pole socket of any mine locomo- 'tive. I

'- A still further object of the invention is the provision of a mounting or support of the character stated that will permit a general use of the drill in and'around mines and industrial plants; 7 r

Another object of the invention is the provision of amounting or support ofthe i character stated wliich shall be resiliently maintained in adjusted position,

' The, foregoing objects are attained by the construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, wherein: V

Figure 1 is a view in side elevation of the electric drill'mountin'g or support, the device being shown in adjusted position for use; ,Figure 2 is a View similar to Figure 1 showing the device in partly adjusted position' I Figure 3 is a sectional View taken on the plane indicated by the line 3--3 of Figure 1; Figure 4 is a sectional view taken on the plane21 indicated by the line H of Figure 1 an Figure 5 is a sectional View taken on the plane indicated by the line5-5 of Figure 1.

I This invention relates to electric drills Corresponding and like parts are referred to nithe tollowing descript on, and designated 1n the several views of the vaccompanying drawings by similar reference characters. a f

The mounting or support comprises a bracket 1 which is adapted to be secured to'a mine locomotive, mine car, work car or I other suitable vehicle or support, and which carries a cylinder 2'. A spring housing 3 ofcylindrical formation is rotatably mounted' in the cylinder 2. One end of the spring housing 3 is closed by a removableplug 4,

and the other end thereof is closed by fa plate 5 provided with an axially extending 'threadedly connected to etheplunger 11 as indicated 'at 13and is pivotally, connected to the socket'8 by a pin 14. A pivoted latch 15 is carried by the socket 8 and is adapted to be to be presently setforth.

A rod 16 is connected at one 'endto a stud engaged with a keeper hook 7 for a purpose 17 for angular adjustment with respect thereto by a bolt 18. The stud 17 is carried by the socket 8 and is secured against'casual movement with respect thereto by bolts 19 through the medium of which the socket is compressed about the stud. An electric drill. motor 20 is connected to the other end of th'erod16 forangular adjustment with is, provided with a boss 22 having right 'angularly related openings 23 for the receprespect thereto bya bolt 21. The motor 20 I of which the motorcan be secured to the rod 16in} an upwardly or laterally extending positiouwith' respect "thereto; Themotor 20 may be of any well known construction,

and is provided with a chuck 24:, a drill bit 25, handle 26, leads 27 and switch 28.

The rod 16 comprises sections 16, 16 and 16, and these sections are connected 'together in a manner to permit the length of a the rod tobe increased or decreased. The section 16 is hollow and connected to the stud '17, the section 16 is hollow and has the motor 20 connected thereto, and the section 16 is solid and telescopically associated withthe other sections. collar 29 is secured to the section 16 and is provided with a set screw 30 adapted to hold this section and-the section 16 against casual relative movement. A collar 31 is secured to the section 16 and is provided with a set screw adapted to secure this section and the section 16" against casual relative movement. The motor 20 and the section 16 may be adjusted axially with respect to the sections 16 and 16" and secured in adjusted position by the set screw 32. The chuck 2st may be of the type to accommodate a flat shank drill bit, or 01 the type to accommodate a taper shank drill bit or of the type to accommodate the spindle of an emery wheel that may be used for the purpose of sharpening drill bits.

As the rod 16 is adjustable as to length and as it is connected to the stud 17 for angular adjustment with respect thereto, holes may be bored at ditterent vertical or horizontal distances from the support to which the bracket 1 is secured. The support may be a mine locomotive, mine car, work car or the like. As the motor 20 and the section 16 may be adjusted angularly with respect to the axis of the rod 16 holes may be drilled at the desired or required angle. Due thereto, and as the motor 20 may be arranged to extend vertically or horizontally from the arm 16 holes may be drilled at any point with respect to the support to which the bracket 1 is secured. In other words, the mounting supports the motor 20 for universal adjustment. The spring 10 is adapted to yieldingly support the motor 20 in ad justed position. If desired the parts 1-15 may be omitted and the stud 17 placed in any standard trolley pole socket to permit such socket to be used as a support for the mounting.

hen it is desired to adjust the device for boring mine trolley hanger holes, the socket S is swung in the direction of the plate 5 and the latch hook 15 engaged with the keeper hook 7. The bolt 18 is then loosened and the rod 16 swung into the desired position. After this has been done the bolt 18 is turned up to secure the rod 16 against casual movement with respect to the study 17 and the latch hook 15 disengaged from the keeper hook 7 to permit the spring to function as a yielding support for the rod 16. The socket 8 is latched down in the manner described in order to permit the rod 16 to be readily adjusted with respect to the stud 17. It is to be understood that the socket 8 is to be secured against. movement by the latch hook 15 and keeper hook 7 during the adjustment of the device for boring holes for blasting or other purposes.

From the foregoing description, taken in connection with the accompanying drawings, the advantages of the construction and ot' the method of operation of the invention will be readily apparent to those skilled in the art to which it appertalns. \Vhile I have described the principle of operation of the invention, together with the device which I now consider to be the best embodiment thereo't', I desire to have it understood that the device shown is merely illustrative. and that such changes may be made when desired as are within the scope of the invention as claimed.

hat is claimed is:

1. A mounting comprisin, in combination with a support, a member connected to the support for movement about a horizontal axis, means yieldingly supporting the member, a rod connected to the member for adjustment about a horizontal axis, a drill, and means connecting the drill to the rod for angular adjustment with respect to the axis thereof.

2. A mounting comprising, in combination with a support, a member connected to the support for movement about a horizontal axis, means yieldingly supporting the member. a rod adjustable as to length and connected to the member for adjustment about a horizontal axis, a drill, and means connecting the drill to the rod for angular adjustment with respect to the axis thereof.

3. A mounting comprising, in combination with a support, a member connected to the support for movement about a horizontal axis, means yieldably supporting the member, means for releasably securing the member against such movement, a rod adjustable as to length and connected to the member for adjustment about a horizontal axis, a drill, and means connecting the drill to the rod for angular adjustment with respect to the axis thereof.

In testimony whereof I atlix my signature.

CECIL A. MOlVLES. 

